Synthesis and Properties of N,N′-Disubstituted Ureas and Their Isosteric Analogs Containing Polycyclic Fragments: XI. 1-[(Adamantan-1 yl)alkyl]-3-arylselenoureas

A series of N,N′-disubstituted selenoureas containing an adamantane fragment have been synthesized in 23–75% yields. Procedures for the isolation and purification of aromatic isoselenocyanates have been improved. The chemical shift of the C=Se carbon nucleus in the 13C NMR spectra of selenoureas has been refined. The synthesized selenoureas have been found to be promising as inhibitors of not only epoxide hydrolase (sEH-H) but also phosphatase domains (sEH-P) of human soluble epoxide hydrolase.